In vivo tibiofemoral contact analysis using 3D MRI-based knee models

This paper quantified the motion of the tibiofemoral contact points during in vivo weight bearing flexion using MRI- based 3D knee models and two orthogonal fluoroscopic images. The contact points on the medial and lateral tibial plateau were calculated by finding the centroid of the intersection of...

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Bibliographic Details
Published in:Journal of biomechanics 2004-10, Vol.37 (10), p.1499-1504
Main Authors: DeFrate, Louis E., Sun, Hao, Gill, Thomas J., Rubash, Harry E., Li, Guoan
Format: Article
Language:English
Subjects:
Adult
Biomechanical Phenomena
Cartilage
Cartilage - physiology
Cartilage contact
Female
Femur - physiology
Geometry
Human subjects
Humans
Imaging
Imaging, Three-Dimensional
In vivo knee kinematics
Kinematics
Knee
Knee Joint - anatomy & histology
Knee Joint - physiology
Magnetic Resonance Imaging
Male
Models, Biological
Motion
Soft tissue biomechanics
Solid modeling
Tibia - physiology
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Summary:This paper quantified the motion of the tibiofemoral contact points during in vivo weight bearing flexion using MRI- based 3D knee models and two orthogonal fluoroscopic images. The contact points on the medial and lateral tibial plateau were calculated by finding the centroid of the intersection of the tibial and femoral cartilage layers and by using the bony geometry alone. Our results indicate that the medial femoral condyle remains in the central portion of the tibial plateau and the lateral condyle translates posteriorly with increasing flexion. Using the bony contact model increased the total translation of the medial and lateral condyles by 250 and 55%, respectively, compared to the cartilage contact model. These results suggest that using the bony geometry alone may not accurately represent the articular surfaces of the knee. Articular cartilage geometry may have to be used to accurately quantify tibiofemoral contact.
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2004.01.012